You're talking like you would play 1vsX. While you're stunned.. nobody of your team helps you? So you get ganged? Well, imo that would be fine.
I say, keep the stuns rare, because their powerful, use more roots/slows/silences etc. but let them overlap them. Perfect timed stun-rotations show a good teamwork, i've no problem with that.
Please no Crowndcontrol reducing items/consumables. In every game, where such things exist, they're nearly a MUST HAVE, because disbales are the key to win mostly. I simply dont like them, they're to strong in my eyes.
So long,
Aspartem